Apple today announced a trade-in promotion offer that would give a minimum Rs 4,000 off if users trade-in their old tablets or notebook computer. BGR India had exclusively reported about this offer earlier in the week and like we reported, the offer is valid on all models of the iPad mini and the 16GB model of iPad with Retina Display. The tablet in exchange should be less than two years old and buyers will get an additional discount if they bring an old iPad. Read on for a list of devices and suggested exchange price, which we had exclusively ...